import random
from urllib.request import urlopen
import sys

WORD_URL = "http://learncodethehardway.org/words.txt"
WORDS = []

PHRASES = {
	"class %%%(%%%):":
	  "Make a class named %%% that is %%%.",
	"class %%%(object):\n\tdef __init__(self,***)":
	  "class %%% has __init__ that takes self and *** params.",
	"class %%%(object):\n\tdef __init__(self,@@@)":
	  "class %%% has function *** that takes self and @@@ params.",
	"*** = %%%()":
	  "Set *** to instance of class %%%.",
	"***.***(@@@)":
	  "From *** get the *** function,call it with params self,@@@.",
	"***.*** = '***'":
	  "From *** get the *** attribute and set it to '***'."
}

#do they want to drill phrases first
if len(sys.argv) == 2 and sys.argv[1] == "english":
    PHRASE_FIRST = True
else:
    PHRASE_FIRST = True

#load up the words from the website
for word in urlopen(WORD_URL).readlines():
    WORDS.append(str(word.strip(),encoding="utf-8"))


def convert(snippet,phrase):
    class_names = [w.capitalize() for w in
	               random.sample(WORDS,snippet.count("%%%"))]
    other_names = random.sample(WORDS,snippet.count("***"))
    results = []
    param_names = []

    for i in range(0,snippet.count("@@@")):
        param_count = random.randint(1,3)
        param_names.append(','.join(random.sample(WORDS,param_count)))


    for sentence in snippet,phrase:
        result = sentence[:]

        #fake class name
        for word in class_names:
            result = result.replace("%%%",word,1)

        #fake other  names
        for word in other_names:
            result = result.replace("***",word,1)

        #fake parameter lists
        for word in param_names:
            result = result.replace("@@@",word,1)

        results.append(result)

    return results


#keep going until CTRL-D
try:
    while True:
        snippets = list(PHRASES.keys())
        random.shuffle(snippets)

        for snippet in snippets:
            phrase = PHRASES[snippet]
            question,answer = convert(snippet,phrase)
            if PHRASE_FIRST:
                question,answer = answer,question

            print(question)

            input("> ")
            print(f"ANSWER: {answer}\n\n")
except EOFError:
    print("\nBye")